It is currently Mon Apr 15, 2024 10:58 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 20 posts ] 
Author Message
Offline
 Post subject: Why did white made a move at E9 instead of F9?
Post #1 Posted: Sun Aug 23, 2015 2:52 am 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
Hello,

I'm a beginner at Go and I followed the http://www.playgo.to/iwtg/en/ tutorials and in section 30, Game Examples, on the second game example, at move 54 white chooses to "Threaten to save the two white stones." at E9.

I don't understand why just "threaten to save", not just save them directly by playing at F9?
Attachment:
File comment: Why E9? Why not F9?
go.png
go.png [ 85.29 KiB | Viewed 11172 times ]

Top
 Profile  
 
Offline
 Post subject: Re: Why did white made a move at E9 instead of F9?
Post #2 Posted: Sun Aug 23, 2015 2:55 am 
Lives in gote
User avatar

Posts: 660
Liked others: 25
Was liked: 124
Rank: Miserable 4k
KGS: STOP STALKING ME
Because black plays E9 and the stones are still cut off and dead.

Top
 Profile  
 
Offline
 Post subject: Re: Why did white made a move at E9 instead of F9?
Post #3 Posted: Sun Aug 23, 2015 2:58 am 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
Oh, OK. Actually white first prevented black from closing his territory there.

If white were to play F9, and then black E9, the three stones would have been removed at the end of the game, right?

Top
 Profile  
 
Offline
 Post subject: Re: Why did white made a move at E9 instead of F9?
Post #4 Posted: Sun Aug 23, 2015 3:00 am 
Lives in gote
User avatar

Posts: 660
Liked others: 25
Was liked: 124
Rank: Miserable 4k
KGS: STOP STALKING ME
paullik wrote:
Oh, OK. Actually white first prevented black from closing his territory there.

If white were to play F9, and then black E9, the three stones would have been removed at the end of the game, right?


Yes

Top
 Profile  
 
Offline
 Post subject: Re: Why did white made a move at E9 instead of F9?
Post #5 Posted: Sun Aug 23, 2015 3:02 am 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
It's clear now.
Thank you!

Top
 Profile  
 
Offline
 Post subject:
Post #6 Posted: Sun Aug 23, 2015 3:07 am 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
paullik wrote:
It's clear now.
Hi Paul,

Let's make sure it's clear... :)

Suppose instead of E9 for :w54: , W plays A5 (to prevent B A5 atari on :w32: ).
Then, what should B play for :b55: ? :)


This post by EdLee was liked by: paullik
Top
 Profile  
 
Offline
 Post subject: Re: Why did white made a move at E9 instead of F9?
Post #7 Posted: Sun Aug 23, 2015 11:47 am 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
Hello EdLee,

Well, I'd say B should play at D9, in order to clearly create a border for the upper-right territory and also gain some influence in the upper left part of the board, where it seems that white is (kind of) in control.

Am I right?

Top
 Profile  
 
Offline
 Post subject:
Post #8 Posted: Sun Aug 23, 2015 12:11 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
Hi Paul,

:b55: D9 is correct. What are the next two moves ( :w56: and :b57: ) ?

In your original diagram, what are the next four moves ( :b55: , :w56: , :b57: , :w58: ) ?

Top
 Profile  
 
Offline
 Post subject: Re: Why did white made a move at E9 instead of F9?
Post #9 Posted: Mon Aug 24, 2015 7:24 am 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
Hmm, if :b55: playes D9, :w56: should play at B9 in order to make a border for his upper left territory and then, :b57: at C9 to get a hold of that neutral teritorry.

In the original diagram:

:b55: should play at F9 in order to capture :w22: and :w26:, then :w56: at C9 to get :b31: and :b29:, now I think both should pass since it seems to me that both territories are settled.

Although I may be mistaken since the game from "The Interactive Way To Go" played :w56: at D9, then :b57: at A5 and finally :w58: at B6. Of course I was greedy to remove black's stones and forgot that if :w56: played at D9 those were in his territory anyway.

Top
 Profile  
 
Offline
 Post subject:
Post #10 Posted: Mon Aug 24, 2015 12:28 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
paullik wrote:
if :b55: playes D9, :w56: should play at B9... :b57: at C9...
No.

:w54: A5.
:b55: D9.
Your :w56: and :b57: are wrong. :) Try again.

Top
 Profile  
 
Offline
 Post subject:
Post #11 Posted: Mon Aug 24, 2015 12:34 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
paullik wrote:
In the original diagram:
:b55: should play at F9... then :w56: at C9...
...now I think both should pass...
:b55: at F9 is correct.
But :w56: at C9 is wrong.
Pass is also wrong.
Try again. :)

When you said "It's clear now" actually it's not what you think. :)

Top
 Profile  
 
Offline
 Post subject: Re:
Post #12 Posted: Mon Aug 24, 2015 9:24 pm 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
EdLee wrote:
When you said "It's clear now" actually it's not what you think. :)

Well I've been playing this game for a week now and I just finished that interactive tutorial, meanwhile I've got defeated by the GoDroid application on my smartphone, but I enjoy the game!


I will try to come up with two new solutions to your questions tonight when I'll have some free time.

Thanks for the questions!

Top
 Profile  
 
Offline
 Post subject: Re:
Post #13 Posted: Mon Aug 24, 2015 10:22 pm 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
EdLee wrote:
paullik wrote:
if :b55: playes D9, :w56: should play at B9... :b57: at C9...
No.

:w54: A5.
:b55: D9.
Your :w56: and :b57: are wrong. :) Try again.

Ok, I got some time, so:

:w54: A5
:b55: D9
:w56: C9
:b57: F9

Top
 Profile  
 
Offline
 Post subject: Re:
Post #14 Posted: Mon Aug 24, 2015 10:27 pm 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
EdLee wrote:
paullik wrote:
In the original diagram:
:b55: should play at F9... then :w56: at C9...
...now I think both should pass...
:b55: at F9 is correct.
But :w56: at C9 is wrong.
Pass is also wrong.
Try again. :)

For the original:

:b55: F9
:w56: D9
:b57: A5
:w58: B6

Top
 Profile  
 
Offline
 Post subject:
Post #15 Posted: Mon Aug 24, 2015 11:10 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
Hi Paul,
paullik wrote:
:w54: A5
:b55: D9
:w56: C9
:b57: F9
:w54: :b55: :w56: OK.

:b57: wrong. Some kind of blind spot. :)

Top
 Profile  
 
Offline
 Post subject: Re:
Post #16 Posted: Mon Aug 24, 2015 11:23 pm 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
EdLee wrote:
Hi Paul,
paullik wrote:
:w54: A5
:b55: D9
:w56: C9
:b57: F9
:w54: :b55: :w56: OK.

:b57: wrong. Some kind of blind spot. :)

Oh...

:b57: E9

Top
 Profile  
 
Offline
 Post subject:
Post #17 Posted: Mon Aug 24, 2015 11:47 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
paullik wrote:
For the original:

:b55: F9
:w56: D9
:b57: A5
:w58: B6
Yes. :)

Top
 Profile  
 
Offline
 Post subject:
Post #18 Posted: Mon Aug 24, 2015 11:47 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
paullik wrote:
:w54: A5
:b55: D9
:w56: C9

Oh...

:b57: E9
Yes. :)

Top
 Profile  
 
Offline
 Post subject:
Post #19 Posted: Mon Aug 24, 2015 11:48 pm 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
paullik wrote:
Well I've been playing this game for a week now
Welcome and Congrats.

Now, to re-cap your original question:
paullik wrote:
at move 54 white chooses to "Threaten to save the two white stones." at E9.
In the following variation (first posed in Post 6)...
paullik wrote:
:w54: A5
:b55: D9
:w56: C9

Oh...

:b57: E9
... Can you see that :b55: at D9 also "threatens to save the two stones ( :b31: :b29: ) " ? :)

Things are hopefully a little clearer now than at post 5. :mrgreen:

It's very nice that only a week has passed and you already get a feel for how Go is very precise
(and therefore, as you'll find out soon enough, can be extremely unforgiving. :twisted: )

Top
 Profile  
 
Offline
 Post subject: Re:
Post #20 Posted: Tue Aug 25, 2015 7:41 am 
Beginner

Posts: 17
Liked others: 1
Was liked: 1
EdLee wrote:
Can you see that :b55: at D9 also "threatens to save the two stones ( :b31: :b29: ) " ? :)


Well, yes, it's about the territory, not about really saving them.

EdLee wrote:

Things are hopefully a little clearer now than at post 5. :mrgreen:


Hopefully.


Thank you for taking the time to guide me!

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 20 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group